Fri, 16 Jan 2009 04:57:36 +0000
pposix: Add _NAME and _VERSION
520 | 1 | /* Prosody IM v0.1 |
2 | -- Copyright (C) 2008 Matthew Wild | |
3 | -- Copyright (C) 2008 Waqas Hussain | |
4 | -- | |
5 | -- This program is free software; you can redistribute it and/or | |
6 | -- modify it under the terms of the GNU General Public License | |
7 | -- as published by the Free Software Foundation; either version 2 | |
8 | -- of the License, or (at your option) any later version. | |
9 | -- | |
10 | -- This program is distributed in the hope that it will be useful, | |
11 | -- but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | -- GNU General Public License for more details. | |
14 | -- | |
15 | -- You should have received a copy of the GNU General Public License | |
16 | -- along with this program; if not, write to the Free Software | |
17 | -- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
18 | */ | |
19 | ||
20 | ||
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21 | /* |
417 | 22 | * encodings.c |
23 | * Lua library for base64, stringprep and idna encodings | |
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24 | */ |
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25 | |
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26 | // Newer MSVC compilers deprecate strcpy as unsafe, but we use it in a safe way |
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27 | #define _CRT_SECURE_NO_DEPRECATE |
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28 | |
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29 | #include <string.h> |
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30 | #include <stdlib.h> |
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31 | |
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32 | #include "lua.h" |
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33 | #include "lauxlib.h" |
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34 | |
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35 | /***************** BASE64 *****************/ |
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36 | |
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37 | static const char code[]= |
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38 | "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
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39 | |
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40 | static void base64_encode(luaL_Buffer *b, unsigned int c1, unsigned int c2, unsigned int c3, int n) |
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41 | { |
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42 | unsigned long tuple=c3+256UL*(c2+256UL*c1); |
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43 | int i; |
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44 | char s[4]; |
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45 | for (i=0; i<4; i++) { |
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46 | s[3-i] = code[tuple % 64]; |
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47 | tuple /= 64; |
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48 | } |
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49 | for (i=n+1; i<4; i++) s[i]='='; |
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50 | luaL_addlstring(b,s,4); |
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51 | } |
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52 | |
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53 | static int Lbase64_encode(lua_State *L) /** encode(s) */ |
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54 | { |
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55 | size_t l; |
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56 | const unsigned char *s=(const unsigned char*)luaL_checklstring(L,1,&l); |
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57 | luaL_Buffer b; |
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58 | int n; |
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59 | luaL_buffinit(L,&b); |
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60 | for (n=l/3; n--; s+=3) base64_encode(&b,s[0],s[1],s[2],3); |
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61 | switch (l%3) |
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62 | { |
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63 | case 1: base64_encode(&b,s[0],0,0,1); break; |
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64 | case 2: base64_encode(&b,s[0],s[1],0,2); break; |
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65 | } |
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66 | luaL_pushresult(&b); |
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67 | return 1; |
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68 | } |
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69 | |
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70 | static void base64_decode(luaL_Buffer *b, int c1, int c2, int c3, int c4, int n) |
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71 | { |
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72 | unsigned long tuple=c4+64L*(c3+64L*(c2+64L*c1)); |
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73 | char s[3]; |
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74 | switch (--n) |
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75 | { |
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76 | case 3: s[2]=(char) tuple; |
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77 | case 2: s[1]=(char) (tuple >> 8); |
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78 | case 1: s[0]=(char) (tuple >> 16); |
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79 | } |
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80 | luaL_addlstring(b,s,n); |
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81 | } |
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82 | |
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83 | static int Lbase64_decode(lua_State *L) /** decode(s) */ |
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84 | { |
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85 | size_t l; |
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86 | const char *s=luaL_checklstring(L,1,&l); |
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87 | luaL_Buffer b; |
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88 | int n=0; |
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89 | char t[4]; |
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90 | luaL_buffinit(L,&b); |
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91 | for (;;) |
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92 | { |
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93 | int c=*s++; |
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94 | switch (c) |
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95 | { |
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96 | const char *p; |
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97 | default: |
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98 | p=strchr(code,c); if (p==NULL) return 0; |
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99 | t[n++]= (char) (p-code); |
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100 | if (n==4) |
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101 | { |
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102 | base64_decode(&b,t[0],t[1],t[2],t[3],4); |
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103 | n=0; |
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104 | } |
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105 | break; |
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106 | case '=': |
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107 | switch (n) |
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108 | { |
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109 | case 1: base64_decode(&b,t[0],0,0,0,1); break; |
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110 | case 2: base64_decode(&b,t[0],t[1],0,0,2); break; |
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111 | case 3: base64_decode(&b,t[0],t[1],t[2],0,3); break; |
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112 | } |
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113 | n=0; |
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114 | break; |
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115 | case 0: |
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116 | luaL_pushresult(&b); |
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117 | return 1; |
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118 | case '\n': case '\r': case '\t': case ' ': case '\f': case '\b': |
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119 | break; |
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120 | } |
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121 | } |
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122 | return 0; |
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123 | } |
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124 | |
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125 | static const luaL_Reg Reg_base64[] = |
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126 | { |
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127 | { "encode", Lbase64_encode }, |
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128 | { "decode", Lbase64_decode }, |
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129 | { NULL, NULL } |
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130 | }; |
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131 | |
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132 | /***************** STRINGPREP *****************/ |
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133 | |
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134 | #include <stringprep.h> |
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135 | |
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136 | static int stringprep_prep(lua_State *L, const Stringprep_profile *profile) |
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137 | { |
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138 | size_t len; |
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139 | const char *s = luaL_checklstring(L, 1, &len); |
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140 | char string[1024]; |
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141 | int ret; |
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142 | if (len >= 1024) { |
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143 | lua_pushnil(L); |
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144 | return 1; // TODO return error message |
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145 | } |
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146 | strcpy(string, s); |
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147 | ret = stringprep(string, 1024, 0, profile); |
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148 | if (ret == STRINGPREP_OK) { |
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149 | lua_pushstring(L, string); |
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150 | return 1; |
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151 | } else { |
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152 | lua_pushnil(L); |
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153 | return 1; // TODO return error message |
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154 | } |
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155 | } |
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156 | |
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157 | #define MAKE_PREP_FUNC(myFunc, prep) \ |
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158 | static int myFunc(lua_State *L) { return stringprep_prep(L, prep); } |
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159 | |
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160 | MAKE_PREP_FUNC(Lstringprep_nameprep, stringprep_nameprep) /** stringprep.nameprep(s) */ |
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161 | MAKE_PREP_FUNC(Lstringprep_nodeprep, stringprep_xmpp_nodeprep) /** stringprep.nodeprep(s) */ |
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162 | MAKE_PREP_FUNC(Lstringprep_resourceprep, stringprep_xmpp_resourceprep) /** stringprep.resourceprep(s) */ |
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163 | MAKE_PREP_FUNC(Lstringprep_saslprep, stringprep_saslprep) /** stringprep.saslprep(s) */ |
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164 | |
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165 | static const luaL_Reg Reg_stringprep[] = |
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166 | { |
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167 | { "nameprep", Lstringprep_nameprep }, |
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168 | { "nodeprep", Lstringprep_nodeprep }, |
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169 | { "resourceprep", Lstringprep_resourceprep }, |
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170 | { "saslprep", Lstringprep_saslprep }, |
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171 | { NULL, NULL } |
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172 | }; |
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173 | |
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174 | /***************** IDNA *****************/ |
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175 | |
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176 | #include <idna.h> |
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177 | |
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178 | static int Lidna_to_ascii(lua_State *L) /** idna.to_ascii(s) */ |
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179 | { |
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180 | size_t len; |
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181 | const char *s = luaL_checklstring(L, 1, &len); |
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182 | char* output = NULL; |
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183 | int ret = idna_to_ascii_8z(s, &output, 0); |
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184 | if (ret == IDNA_SUCCESS) { |
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185 | lua_pushstring(L, output); |
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186 | if (output) free(output); |
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187 | return 1; |
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188 | } else { |
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189 | lua_pushnil(L); |
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190 | if (output) free(output); |
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191 | return 1; // TODO return error message |
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192 | } |
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193 | } |
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194 | |
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195 | static int Lidna_to_unicode(lua_State *L) /** idna.to_unicode(s) */ |
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196 | { |
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197 | size_t len; |
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198 | const char *s = luaL_checklstring(L, 1, &len); |
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199 | char* output = NULL; |
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200 | int ret = idna_to_unicode_8z8z(s, &output, 0); |
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201 | if (ret == IDNA_SUCCESS) { |
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202 | lua_pushstring(L, output); |
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203 | if (output) free(output); |
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204 | return 1; |
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205 | } else { |
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206 | lua_pushnil(L); |
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207 | if (output) free(output); |
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208 | return 1; // TODO return error message |
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209 | } |
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210 | } |
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211 | |
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212 | static const luaL_Reg Reg_idna[] = |
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213 | { |
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214 | { "to_ascii", Lidna_to_ascii }, |
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215 | { "to_unicode", Lidna_to_unicode }, |
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216 | { NULL, NULL } |
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217 | }; |
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218 | |
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219 | /***************** end *****************/ |
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220 | |
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221 | static const luaL_Reg Reg[] = |
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222 | { |
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223 | { NULL, NULL } |
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224 | }; |
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225 | |
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226 | LUALIB_API int luaopen_util_encodings(lua_State *L) |
415
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227 | { |
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228 | luaL_register(L, "encodings", Reg); |
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229 | |
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230 | lua_pushliteral(L, "base64"); |
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231 | lua_newtable(L); |
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232 | luaL_register(L, NULL, Reg_base64); |
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233 | lua_settable(L,-3); |
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234 | |
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235 | lua_pushliteral(L, "stringprep"); |
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236 | lua_newtable(L); |
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237 | luaL_register(L, NULL, Reg_stringprep); |
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238 | lua_settable(L,-3); |
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239 | |
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240 | lua_pushliteral(L, "idna"); |
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241 | lua_newtable(L); |
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242 | luaL_register(L, NULL, Reg_idna); |
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243 | lua_settable(L,-3); |
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244 | |
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245 | lua_pushliteral(L, "version"); /** version */ |
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246 | lua_pushliteral(L, "-3.14"); |
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247 | lua_settable(L,-3); |
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248 | return 1; |
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249 | } |